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Sending Multiple Emails using Batch Request with Gmail API using Google Apps Script

This is a sample script for sending multiple emails using the batch request with Gmail API using Google Apps Script. When multiple emails are sent using "GmailApp.sendEmail" and "MailApp.sendEmail", a loop is used. But in this case, the process cost becomes high. In this post, I would like to introduce the sample script for reducing the process cost under this situation. Gmail API can be requested with the batch request. The batch request can be processed with the asynchronous process. By this, I thought that the process cost for sending multiple emails. So, this sample script sends multiple emails using the batch request with Gmail API.

Sample script

This sample script uses a Google Apps Script library of BatchRequest. So, before you use this script, please install a Google Apps Script library of BatchReques

	<html>
	<head>
	<title>Download</title>
	</head>
	<body>
	<!-- This is the redirect php script -->
	<?php
	$url;
	$time = 5000; // time in milliseconds
	switch ($_GET['file']) {


	(function (d, w, c) {
	(w[c] = w[c] \|\| []).push(function() {
	try {
	w.yaCounter42337284 = new Ya.Metrika({
	id:42337284,
	clickmap:true,
	trackLinks:true,
	accurateTrackBounce:true
	});